Car-truck.



PATENTED AUG. 27, 1907,

El mu R w uT R -A WU APPLICATION rnnn ulna, 196B.

2 8HEET88HBET 1.

INVENTOR.

I u I I aa zifi ii. on

No. 864,192. PATBNTED AUG. 27, 1907.

W. G. PRICE.

GAR TRUCK. APPLIOATIOI ITILED J'AI.3,'1906.

2 SHEETS-SHEET 2.

1 WITNESSES. mvsN'ron.

m: NORRIS PETERS cc., WASHINGTON, D. c.

' larged side elevation partly in section; Fig. 3 is a plan view of aportion of one side of the truck; Fig. 4 is a 1 plates so as to give alarge damping effect. Springs 28 UNITED STATES PATENT OFFICE.

CAR-TRUCK.

To all whom it may concern:

of Butler, in the county of Butler and State of Pennsylvania, haveinvented a new and useful Improvement in Oar-Trucks; and I do herebydeclare the following to be a full, clear, and exact descriptionthereof.

My invention relates to improvements in the construction of non-pivotaltrucks for electric motor cars.

One of the main objects of my invention is to locate the car springsnear the ends of the car body in order to prevent the bending downor'sagging of the ends of the car and so support the car by the springsto dis pense with the use of the stiffening truss which is usuallyattached to the sills of such cars.

Other objects of my invention are to prevent the excessive oscillationor galloping of the car body when the ends of the car alternately moveup and down, and i to prevent horizontal movement of the journal boxeswith the truck frame and furthermore by eliminating I unnecessary partsthereby reducing the Weight of the i truck.

To these ends my invention comprises the novel features hereinafter setforth and claimed.

In the accompanying drawings, Figure 1 represents a side view of myimproved truck; Fig. 2 is an encross section on line 4- 1, Fig. 3.

Like numerals designate like parts in the different figures of thedrawings.

In the drawing the numeral 2 designates the side frame of the truckwhich is carried upon the springs 3. These springs 3 rests in seats 4.in the journal boxes 5, and at their upper ends engage the seats 3 inthe casting 20 to said side frames. The side frames 2 are furthersupported by the springs 6 which are carried in pockets 7, said pocketsbeing secured by the bolts 8 to the side frame 2 whereby said pocketsare free to revolve when not connected up to the truss rods 9. Thesetruss rods 9 have at their forward ends the nuts 10 engaging the threads11, and beyond said nuts the bearing blocks 12 against which saidsprings 6 abut. The opposite ends of the truss rods 9 enter the seats 13formed in the lugs 14 of the journal boxes 5. These seats 13 areslightly outwardly flaring so as to permit a certain amount of angularmovement on the part of said truss rods due to any oscillation on thepart of the side frames 2. By adjusting the nuts 10 the length of thetruss rods 9 may be varied to take up any wear or for other reason. Thetruss rods 15 extending from one journal box to the other have theirends fitting in seats 16 formed in the lugs 14, said seats beinglikewise slightly outwardly fiaring so as to permit of a certain amountof angular movement on the part of the truss rods 15. The helicalsprings 17 have their upper Specification of Letters Patent. Applicationfiled January 3, 1906. Serial ll'o. 294,451.

Patented Aug. 27, 1907.

ends in contact with the spring caps 18 boltedto the car sill 19, saidsprings passing down through the guidecasting 20, secured by bolts 21tothe side frames 2 and resting at their lower ends upon the brackets22. Bolts 23 secured to the caps 18 pass down through the springs 17 andthrough the brackets 22 where said bolts are provided with the nuts 24.These nuts 24 engage said bolts 23 at a slight distance below thebrackets 22 and comparatively weak springs 25 are interposed betweensaid nuts 24 and the lower face of the brackets 22 to prevent therattling of the said bolts 23. A collar or flange 26 on the upper facesof the journal boxes 5' project up into the central cavities 27 of theguide castings 20, whereby the said journal boxes are held securely inposition against lateral movement and are free to move up and downtherein.

Elliptic springs 28 are secured between the two bars of the side frames2 and said springs carry the caps 29 v which are bolted to the car sills19. The U-shaped pieces 30 are secured to the outer ends of the sideframes 2 by means of bolts 31 and the lower sections of the springs 28fit within said U-pieces 30 and U-bolts 32 securely unite the saidsprings with the U-pieces 30. The helical springs 17 are weaker than theelliptic springs 28 so that the larger part of the car body and loadwill be carried by said springs 28. These springs 28 are purposely madewith a large number of leaves or being located as far apart as possiblelongitudinal of the car, their damping power has comparatively largeleverage to resist the endwise oscillation or galloping of the car andthe energy which produces the oscillation is quickly absorbed by suchsprings in such a location.

In order to provide sufficient strength to carry the springs 28, I havestrengthened and braced the side frames 2 with the truss rods 9 and 15which form a truss in which the said rods 9 and 1.5 are in compressionwhile the journal box 5 acts as the vertical tension member of thetruss. The springs 3 and 6 connect the vertical and diagonal members ofthe truss to the top chord which is the side frame 2 so that said sideframe is spring supported upon its truss. Where the side frame issupported upon the journal boxes, as illustrated, said journal boxeswill be in tension below the axles and in compression above same, butthe side frame is not necessarily supported by the journal boxes and inthat event the journal boxes are not in compression above the axles. Thesprings 17 which rest directly upon the journal box brackets 22 passthrough the close fitting holes in the guide castings 20 and thusprevent any swaying of the car body with reference to the truck frame,while at the same time part of the vehicle is carried by the journalboxes independent of the side frames. The truss rods 9 and 15 hold thebottoms of the journal boxes so that they can have practically nomovement in direction longitudinal of the truss. The springs 6 beingshort and very stiff, their variable deflections can cause but veryslight longitudinal movement of the truss rods 9 and 15. The springs 3,17 and lugs 26 on the journal boxes 5 which engage the guide casting 20prevent practically all horizontal movement of the upper end of thejournal box. This effect is very desirable as the electric motors whensecured to-the trucks cannot push the wheels against the brake shoes,which isliable to occur when the journal boxes have a considerablemovement longitudinally of the truck frame. By my invention, however,the journal boxes have practically no lateral movement so that thewheels cannot be forced into contact with the brake shoes by the motoras above described.

In order to support the ends of the side frames 2 the springs 6necessarily carry a much greater portion of the load than the springs 3so that by this arrangement the spring base is much longer than it is intrucks which carry their frames by springs located only at the journalboxes and there is less liability of oscillation. By this arrangementthe removal of wheels and axles is much facilitated as it is onlynecessary to first remove the nuts from the lower end of the bolts 23.

By my invention therefore, I provide a truck which supports the car insuch manner that excessive oscillation or galloping of the car body isavoided while at the same time the journal boxes are so supported as toprevent their moving horizontally, and the car is so supported by thesprings as to avoid the necessity of the stiffening truss which hasheretofore been almost universally employed.

What I claim is:

boxes therefor, of a side frame, and diagonal truss rods.

extending from said journal boxes to said side frame, and a truss rod incompression connecting said journal boxes.

4. In a truck, the combination with axles and journal boxes therefor, ofa side frame, and diagonal truss rods extending from said journal boxesto said side frame, springs interposed between said truss rods and saidside frames, and a truss rod in compression connecting said journalboxes.

5. In a truck, the combination with axles and journal boxes therefor, ofa side frame, diagonal truss rods extending from said journal boxes tosaid side frames, springs interposed between said truss rods and sideframes, and means for increasing or decreasing the tension of saidsprings.

6. In a truck, the combination with axles and journal boxes therefor, ofa side frame,'truss rods connecting said journal boxes with said sideframes, nuts on the ends of said truss rods, and springs interposedbetween said nuts and said side frames.

7. In a truck, the combination with axles and journal boxes therefor, ofside frames, pockets on said side frames, truss rods extending from saidjournal boxes to said side frames, springs in said pockets bearingagainst said truss rods, and a truss rod in compression connecting saidjournal boxes.

8. In a truck, the combination with axles and journal boxes therefor, ofside frames, pivotal pockets on said side frames, truss rodsextending'from said journal boxes to said side frames, and springs insaid pockets bearing against said truss rods.

9. In a truck, the combination with axles and journal boxes therefor, ofa side frame, truss rods engaging seats in said axle boxes and extendingto said side frame, and truss rods in compression connecting saidjournal boxes.

10. In a truck, the combination with axles and journal boxes therefor,of a side frame, truss rods engaging enlarged seats in said journalboxes and extending from said journal boxes to said side frame, and atruss rod in compression engaging enlarged seats in said axle boxes andextending from one axle box to the other.

11. In a truck, the combination with axles and journal boxes therefor,of a trussed side frame, the journal boxes forming the vertical tensionmembers of the truss, and truss rods extending from said journal boxesto said 'side frame and from one journal box to the other.

12. In a truck, the combination with axles and journa boxes therefor, ofa trussed side frame, the journal boxes forming the vertical tensionmembers of the truss, and compression members engaging seats in saidjournal boxes and extending to said side frames, and from one journalbox to the other.

13. In a truck, the combination with axles and journal boxes therefor,of a trussed side frame, the journal boxes forming the vertical tensionmembers of the truss, the compression members of the truss engagingenlarged openings in said journal boxes and extending to the side frameand from one journal box to the other, whereby said compression membersare permitted a certain amount of angular movement.

14. In a truck, the combination with axles and journal boxes therefor,of a trussed side frame, the journal boxes forming the vertical tensionmembers of the truss, and springs interposed between said journal boxesand the side frame and between the compression members of said truss andsaid side frame.

15. In a truck, the combination with axles and journal boxes therefor,of a side frame having a single truss extending substantially the entirelength of said frame, load carrying springs and means for imparting anangular movement to the compression members of the truss with referenceto each other under varying loads on the truss.

16. In a truck, the combination with axles and journal boxes therefor,of a side frame having a single truss extending substantially the entirelength of said side frame, and load carrying springs located between theconnecting parts of the truss.

17. In a truck, the combination with axles and journal boxes therefor,of a flexible trussed side frame.

18. In a truck, the combination with axles and journal boxes therefor,of a side frame and diagonal braces sup porting the ends of said frame,and springs interposed between said frame and said braces.

19. In a truck, the combination with axles and journal boxes therefor,of a two-piece side frame, car supporting springs located between theparts of the frame, and diagonal braces supporting the ends of saidframe and springs interposed between said frame and said braces.

20. In a truck, the combination with axles and journal boxes therefor,of a single truss side frame spring supported on diagonal braces.

21. In a truck, the combination with axles and journal boxes therefor,of side frames, vehicle carrying springs, means for supporting thevehicle partially by the side frames and partially by the journal boxesindependent of the side frame.

22. In a truck, the combination with the axles and journal boxestherefor, of side frames, vehicle springs carried by said side framesand vehicle springs carried by said journal boxes, whereby the vehicleis partially carried by said side frames and partially by the journalboxes independent of said side frames.

23. In a truck, the combination with axles and journal boxes therefor,of a side frame, vehicle springs carried by said side frames, and weakervehicle springs carried by said journal boxes, whereby the vehicle iscarried partially by the side frames and partially by the journal boxesindependent of said side frames.

24. In a truck, the combination with theaxles and journal boxestherefor, of trussed side frames, vehicle springs therefor, thecompression members of the truss connected directly to the journalboxes.

25. In a truck, the combination with the axles and journal boxestherefor, -of trussed side frames and vehicle carrying springs therefor,the compression members of said truss supporting the journal boxesagainst movement longitudinally of the truss.

26. In a truck, the combination with the axles and journal boxes, ofside frames and vehicle supporting springs, the journal boxes supportingthe side frames upon one set of springs; and said journal boxessupporting the vehicle upon another independent set of springs.

27. In a truck, the combination with the axles and journal boxestherefor, of side frames and vehicle carrying springs, and means forsupporting the side frames and vehicle independently upon the journalboxes.

28. In a truck, the combination with the axles and journal boxestherefor, of side frames, springs supported by said journal boxes andupon which said side frames rest, and springs carried by said journalboxes independent of said side frames and supporting the vehicle.

29. In a truck, the combination with the axles and journal boxestherefor, of side frames each having a single truss, springs supportingsame, the spring base being greater than the wheel base.

30. In a truck, the combination with axles and journal boxes therefor,of side frames, springs supporting same, the base of said supportingsprings being of greater length than the distance from center to centerof said journal boxes.

31. In a truck, the combination with axles and journal boxes therefor,of a trussed side frame, the journal boxes forming one member of thetruss supporting said side frame, and being in tension below the axleand in compression above same.

32. In a truck, the combination with axles and journal boxes therefor,of a side frame, vehicle supporting springs passing through guide waysin said side frame and resting upon said journal boxes.

33. In a truck, the combination with axles and journal boxes therefor,of a two piece side frame, a member connecting said side frame betweenthe pieces thereof and having spring guides therein, vehicle springspassing through said guide ways and supported by said journal boxes.

In testimony whereof, I the said WILLIAM G. PRICE have hereunto set myhand.

WILLIAM G. PRICE.

Witnesses:

ROBERT C. TOTTEN, G. C. RAYMOND.

